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United States Department of Agriculture

Agricultural Research Service

Harold P. Collins (Hal)

Research Microbiologist


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Biochar aging reduces earthworm avoidance - (Abstract Only)
Weyers, S.L., Spokas, K.A., Gaskin, J., Collins, H.P., Cantrell, K.B. 2014. Biochar aging reduces earthworm avoidance [abstract]. The 10th International Symposium on Earthworm Ecology. p. 120.
Respiratory activity of ‘Chelan’, ‘Bing’ and ‘Selah’ sweet cherries in relation to fruit traits at green, white-pink, red and mahogany ripening stages - (Peer Reviewed Journal) - (11-Jul-13)
Phosphorous uptake by potato (Solanum tuberosum L.) from biochar amended with anaerobic digested dairy manure effluent - (Peer Reviewed Journal)
Collins, H.P., Porter, L., Streubel, J., Chaves-Cordoba, B. 2013. Phosphorous uptake by potato (Solanum tuberosum L.) from biochar amended with anaerobic digested dairy manure effluent. Agronomy Journal. 105:989-998.
Chemistry and microbial functional diversity differences in biofuel crop and grassland soils in multiple geographies - (Peer Reviewed Journal)
Watrud, L., Reichman, J., Bollman, M., Smith, B., Lee, E., Jastrow, J., Casler, M.D., Collins, H.P., Fransen, S., Mitchell, R., Owens, V.N., Bean, B., Rooney, W.L., Tyler, D.D., King, G.A. 2012. Chemistry and microbial functional diversity differences in biofuel crop and grassland soils in multiple geographies. BioEnergy Research. 6(2):601-619.
Challenges and opportunities for mitigating nitrous oxide emissions from fertilized cropping systems Reprint Icon - (Peer Reviewed Journal)
Venterea, R.T., Halvorson, A.D., Kitchen, N.R., Liebig, M.A., Cavigelli, M.A., Del Grosso, S.J., Motavalli, P.P., Nelson, K.A., Spokas, K.A., Singh, B.P., Stewart, C.E., Ranaivoson, A., Strock, J., Collins, H.P. 2012. Challenges and opportunities for mitigating nitrous oxide emissions from fertilized cropping systems. Frontiers in Ecology and the Environment. 10(10)562-570.
Carbon storage and nitrous oxide emissions of cropping systems in eastern Washington: A simulation study - (Peer Reviewed Journal)
Stöckle, C., Higgins, S., Kamanian, A., Nelson, R., Huggins, D.R., Marcos, J., Collins, H.P. 2012. Carbon storage and nitrous oxide emissions of cropping systems in eastern Washington: A simulation study. Journal of Soil and Water Conservation. 67(5):365-377.
Response of selected soil microbial populations and activities to land conversion - (Peer Reviewed Journal)
Cochran, R.L., Collins, H.P., Alva, A.K. 2013. Response of selected soil microbial populations and activities to land conversion. Communications in Soil Science and Plant Analysis. 44:1976-1991.
Chapter 10 – Management to Reduce Greenhouse Gas Emissions in Western U.S. Croplands Reprint Icon - (Book / Chapter)
Halvorson, A.D., Steenwerth, K.L., Suddick, E.C., Liebig, M.A., Bronson, K.F., Collins, H.P. 2012. Chapter 10 – Management to Reduce Greenhouse Gas Emissions in Western U.S. Croplands. Elsevier. 167-182.
Chapter 10 - Management to Reduce Greenhouse Gas Emissions in Western U.S. Croplands Reprint Icon - (Book / Chapter)
Halvorson, A.D., Steenwerth, K.L., Suddick, E.C., Liebig, M.A., Bronson, K.F., Collins, H.P. 2012. Chapter 10 - Management to Reduce Greenhouse Gas Emissions in Western U.S. Croplands. Elsevier. 167-182.
Greenhouse gas emissions from an irrigated silt loam soil amended with anaerobic digested dairy manure - (Peer Reviewed Journal)
Collins, H.P., Streubel, J., Alva, A.K., Frear, C., Chen, S., Fransen, S.F., Kruger, C., Granatstein, D. 2011. Greenhouse gas emissions from an irrigated silt loam soil amended with anaerobic digested dairy manure. Soil Science Society of America Journal. 75:2206-2216.
Impact of deficit irrigation on tuber yield and quality of potato cultivars - (Peer Reviewed Journal)
Alva, A.K., Moore, A.D., Collins, H.P. 2012. Impact of deficit irrigation on tuber yield and quality of potato cultivars. Journal of Crop Improvement. 26:211-227.
Biochar: A synthesis of its agronomic impact beyond carbon sequestration Reprint Icon - (Peer Reviewed Journal)
Spokas, K.A., Cantrell, K.B., Novak, J.M., Archer, D.W., Ippolito, J.A., Collins, H.P., Boateng, A.A., Lima, I.M., Lamb, M.C., Mcaloon, A.J., Lentz, R.D., Nichols, K.A. 2012. Biochar: A synthesis of its agronomic impact beyond carbon sequestration. Journal of Environmental Quality. 41(4):973-989.
Management to reduce greenhouse gas emissions in western U.S. croplands - (Book / Chapter)
Halvorson, A.D., Steenwerth, K.L., Suddick, E.C., Liebig, M.A., Smith, J.L., Bronson, K.F., Collins, H.P. 2012. Management to reduce greenhouse gas emissions in western U.S. croplands. Elsevier. New York, NY: Elsevier Inc. p. 167-182.
Influence of Biochar on Soil pH, Water Holding Capacity, Nitrogen and Carbon Dynamics - (Peer Reviewed Journal)
Streubel, J.D., Collins, H.P., Garcia-Perez, M., Tarara, J.M., Granatstein, D., Kruger, C.E. 2011. Influence of Biochar on Soil pH, Water Holding Capacity, Nitrogen and Carbon Dynamics. Soil Science Society of America Journal. 75: 1402-1413.
Biochar produced from anaerobically-digested fiber reduces phosphorus in dairy lagoons - (Peer Reviewed Journal)
Streubel, J.D., Collins, H.P., Tarara, J.M., Cochran, R.L. 2012. Biochar produced from anaerobically-digested fiber reduces phosphorus in dairy lagoons. Journal of Environmental Quality. 41:1166-1174.
Biochar Usage: Pros and Cons - (Proceedings)
Ippolito, J.A., Lentz, R.D., Novak, J.M., Spokas, K.A., Collins, H.P., Streubel, J. 2011. Biochar Usage: Pros and Cons. Western Nutrient Management Conference Proceedings. 9:93-98.
Increasing the sink: agricultural management and soil carbon dynamics: western U.S. croplands. In: Liebig, M., Franzluebbers, A., and Follet, R., editors. Managing agricultural greenhouse gasses. 1st edition. Waltham, MA - (Book / Chapter)
Collins, H.P., Mikha, M.M., Brown, T.T., Smith, J.L., Huggins, D.R., Sainju, U.M. 2012. Increasing the sink: agricultural management and soil carbon dynamics: western U.S. croplands. In: Liebig, M., Franzluebbers, A., and Follet, R., editors. Managing agricultural greenhouse gasses. 1st edition. Waltham, MA. Elsevier. p. 59-78.
Effect of Biochar on Bioavailability of Atrazine and Metribuzin in Two Soils - (Abstract Only)
Shaner, D.L., Boydston, R.A., Krutz, L.J., Collins, H.P. 2011. Effect of Biochar on Bioavailability of Atrazine and Metribuzin in Two Soils. Weed Science Society of America Meeting Abstracts. Feb 7, 2011 Portland Oregon.
Chemical differences in soil organic matter fractions determined by diffuse-reflectance mid-infrared spectroscopy - (Peer Reviewed Journal)
Calderon, F.J., Reeves III, J.B., Collins, H.P., Eldor, P.A. 2011. Chemical differences in soil organic matter fractions determined by diffuse-reflectance mid-infrared spectroscopy. Soil Science Society of America Journal. 75(2)568-579.
Farm-scale variation of soil quality indices and association with edaphic properties Reprint Icon - (Peer Reviewed Journal)
Collins, D.P., Cogger, C.G., Kennedy, A.C., Forge, T., Collins, H.P., Bary, A.I., Rossi, R. 2011. Farm-scale variation of soil quality indices and association with edaphic properties. Soil Science Society of America Journal. 75:580–590. doi:10.2136/sssaj2010.0029.
Introduction: Evaluating long-term impacts of harvesting crop residues on soil quality - (Review Article)
Huggins, D.R., Karow, R.S., Collins, H.P., Ransom, J.K. 2010. Introduction: Evaluating long-term impacts of harvesting crop residues on soil quality. Agronomy Journal. 103:230–233. doi:10.2134/agronj2010.0382s.
The effect of young biochar on soil respiration Reprint Icon - (Peer Reviewed Journal)
Smith, J.L., Collins, H.P., Bailey, V.L. 2010. The effect of young biochar on soil respiration. Soil Biology and Biochemistry. 42(12):2345-2347. doi:10.1016/j.soilbio.2010.09.013.
Carbon sequestration under irrigated switchgrass (Panicum Virgatum) production - (Peer Reviewed Journal)
Collins, H.P., Fransen, S., Smith, J.L. 2010. Carbon sequestration under irrigated switchgrass (panicum virgatum) production. Soil Science Society of America Journal. 74:2049-2058.
The Influence of Biochar on Soil Processes - (Abstract Only) - (04-May-10)
Response of three switchgrass (Panicum Virgatum) cultivars to mesotrione, quinclorac, and pendimethalin - (Peer Reviewed Journal)
Boydston, R.A., Collins, H.P., Fransen, S. 2010. Response of Three Switchgrass (Panicum virgatum) Cultivars to Mesotrione, Quinclorac, and Pendimethalin. Weed Technology. 24:336-341.
Use of Biochar to sequester nutrients from dairy manure lagoons - (Abstract Only) - (12-Apr-10)
Potato Response to Tillage and Nitrogen Management - (Proceedings)
Alva, A.K., Collins, H.P., Boydston, R.A. 2010. Potato Response to Tillage and Nitrogen Management. International Soil Science Congress Proceedings.
Use of Biochar from the Pyrolysis of Waste Organic Material as a Soil Amendment - (Other) - (30-Aug-09)
Performance of solid-state sensors for continuous, real-time measurement of soil CO2 concentrations - (Peer Reviewed Journal)
Young, S.L., Pierce, F.J., Streubel, J.D., Collins, H.P. 2009. Performance of solid-state sensors for continuous, real-time measurement of soil CO2 concentrations. Agronomy Journal. 101:1417-1420.
Use of Biochar from the Pyrolysis of Waste Organic Material as a Soil Amendment - (Abstract Only) - (03-Aug-09)
Biomass Accumulation and Partitioning in Two Potato Cultivars as Influenced by Irrigation and Nitrogen Management - (Abstract Only)
Alva, A.K., Ren, H., Boge, W.L., Collins, H.P., Boydston, R.A. 2009. Biomass Accumulation and Partitioning in Two Potato Cultivars as Influenced by Irrigation and Nitrogen Management. American Society of Agronomy, Soil Science Society of America, Crop Science Society of America - Annual Meetings, Pittsburgh, PA. Nov. 1-5, 2009. Program Abstract.
Use of Biochar from the Pyrolysis of Woody and Herbaceous Organic Matter as Soil Amendments - (Abstract Only) - (30-Apr-09)
Utilization of Re-processed Anaerobically Digested Fiber from Dairy Manure as a Container Media Substrate - (Peer Reviewed Journal)
Macconnell, C.B., Collins, H.P. 2009. Utilization of Re-processed Anaerobically Digested Fiber from Dairy Manure as a Container Media Substrate. Acta Horticulturae. 819: 279-286.
Mineralization of nitrogen from biofuel byproducts and animal manures amended to a sandy soil - (Peer Reviewed Journal)
Moore, A.D., Alva, A.K., Collins, H.P., Boydston, R.A. 2010. Mineralization of nitrogen from biofuel byproducts and animal manures amended to a sandy soil. Communications in Soil Science and Plant Analysis. 41:1315-1326.
Nitrogen Management for Irrigated Potato Production under Different Tillage - (Peer Reviewed Journal)
Alva, A.K., Collins, H.P., Boydston, R.A. 2009. Nitrogen Management for Irrigated Potato Production under Different Tillage. Soil Science Society of America Journal. 73:1-8.
Potato Nitrogen and Water Management - (Proceedings)
Alva, A.K., Collins, H.P., Boydston, R.A. 2008. Potato Nitrogen and Water Management. International Symposium on Plant Nutrient Management Under Stress Conditions. Nov. 24-27, 2008. Cairo, Egypt. Pp. 329-333.
Reduced Tillage in an Irrigated Potato Rotation - (Peer Reviewed Journal) - (29-Sep-08)
Control of Volunteer Potato (Solanum tuberosum) in Sweet Corn with Mesotrione Unaffected by Atrazine or Tillage - (Peer Reviewed Journal)
Boydston, R.A., Collins, H.P., Alva, A.K. 2008. Control of Volunteer Potato (Solanum tuberosum) in Sweet Corn with Mesotrione Unaffected by Atrazine or Tillage. Weed Technology. 22:654-659.
Establishing Switchgrass for Biofuel and Forage During Seeding and Early Seedling Growth Stages - (Experiment Station) - (26-Jun-08)
Late Seedling Development and Winter Dormancy Management of Irrigated Switchgrass for Biofuel in the PNW - (Experiment Station) - (26-Jun-08)
Biomass Production and Nutrient Removal by Switchgrass (Panicum virgatum) under Irrigation - (Abstract Only)
Collins, H.P., Fransen, S., Hang, A., Boydston, R.A., Kruger, C. 2008. Biomass Production and Nutrient Removal by Switchgrass (Panicum virgatum) under Irrigation. 2008 International Meetings, Houston, TX Oct 4-9, 2008, on CD.
Performance of Continuous CO2 Measurements in Soils: A Preliminary Assessment - (Abstract Only)
Stuebel, J., Collins, H.P., Perry, E.M., Elliott, T.V., Young, S.L., Pierce, F.J. 2008. Performance of Continuous CO2 Measurements in Soils: A Preliminary Assessment. American Society of Agronomy Abstracts. Houston, TX Oct 4-9, 2008, on CD.
Cover Crop, Amendment, and Tillage Effects on Decomposers, Nematodes, and Collembolans in An Organic Vegetable System - (Abstract Only)
Collins, D., Cogger, C., Kennedy, A., Forge, T., Collins, H.P., Bary, A., Maki, E. 2008. Cover Crop, Amendment, and Tillage Effects on Decomposers, Nematodes, and Collembolans in An Organic Vegetable System. American Society of Agronomy Abstracts. 2008 International Meetings, Houston, TX Oct 4-9, 2008, on CD.
Gracenet: Trace Gas Fluxes from Irrigated Soils Amended with Anaerobic Digested Dairy Manure - (Abstract Only)
Collins, H.P., Struebel, J., Fransen, S., Kruger, C., Chen, S. 2008. Gracenet: trace gas fluxes from irrigated soils amended with anaerobic digested dairy manure.. American Society of Agronomy Abstracts, 2008 International Meetings, Houston, TX. Oct 4-9, 2008. On CD.
Managing deficit irrigation for potatoes - (Proceedings)
Alva, A.K., Collins, H.P., Boydston, R.A., Moore, A.D. 2008. Managing deficit irrigation for potatoes. International Crop Science Congress Proceedings. (On CD).
Greenhouse Trace Gas Fluxes from an Irrigated Sweet Corn (Zea mays L.) - Potato (Solanum tuberosum L.) Rotation - (Peer Reviewed Journal)
Haile-Mariam S., H.P. Collins, and S.S. Higgins. 2008. Greenhouse Gas Fluxes from an Irrigated Sweet Corn (Zea mays L.) - Potato (Solanum tuberosum L.) Rotation. J. Environ. 37:759-771.
Transformations of Nitrogen from Biofuel Byproducts and Animal Manures Amended to a Sandy Soil - (Abstract Only)
Moore, A.D., Alva, A.K., Collins, H.P., Boydston, R.A. 2007. Transformations of Nitrogen from Biofuel Byproducts and Animal Manures Amended to a Sandy Soil. American Society of Agronomy Meetings 2007.
Response of weeds and ornamental plants to potting soil amended with dried distillers grains - (Peer Reviewed Journal)
Boydston, R.A., Vaughn, S.F., Collins, H.P. 2008. Response of weeds and ornamental plants to potting soil amended with dried distillers grains. HortScience. 43:191-195.
Fractionation of soil organic matter following long-term laboratory incubation - (Peer Reviewed Journal)
Haile-Mariam, S., H.P. Collins, S.E. Wright, and E.A. Paul. 2008. Fractionation of soil organic matter following long-term laboratory incubation. Soil. Sci. Soc. Am. J. 72:370-378.
Effect of mustard seed meal on early weed emergence in peppermint and potato - (Popular Publication)
Boydston, R., A. McGuire, S. Vaughn, and H. Collins. Effect of mustard seed meal on early weed emergence in peppermint and potato in Sustaining the Pacific Northwest - Food, Farm, & Natural Resource Systems, Newsletter, CSNAR, Washington State University Extension. 5(2):4-6. 2007.
Managing Cover Crops in Conservation Tillage Systems - (Book / Chapter)
Balkcom, K.S., Schomberg, H.H., Reeves, D.W., Clark, A., Baumhardt, R.L., Collins, H.P., Delgado, J.A., Kaspar, T.C., Mitchell, J., Duiker, S. 2007. Managing Cover Crops in Conservation Tillage Systems. In: Clark, A. Managing Cover Crops Profitability. 3rd edition. Handbook Series Book 9. Sustainable Agriculture Network. p. 44-61.
Conversion of Semi-Arid Shrub-Steppe Lands to Irrigated Crop Production: Spatial Variability of Soil Properties. - (Abstract Only)
Collins, H.P., Pierce, F., Moore, A.D., Perry, E.M., Andrade-Sanchez, P., Alva, A.K. 2007. Conversion of Semi-Arid Shrub-Steppe Lands to Irrigated Crop Production: Spatial Variability of Soil Properties. American Society Agronomy Abstracts, 2007 International Meetings, New Orleans, LA, Nov 4-8, 2007, on CD, © Copyright 2007, ASA-CSSA-SSSA.I
Carbon Sequestration under Irrigated Switchgrass Production - (Abstract Only)
Collins, H.P., Fransen, S., Smith, J.L. 2007. Carbon Sequestration under Irrigated Switchgrass Production. American Society Agronomy Abstracts, 2007 International Meetings, New Orleans, LA, Nov 4-8, 2007, on CD, © Copyright 2007, ASA-CSSA-SSSA.I
Switchgrass Production in Washington – Part II of Biofuel Feedstocks in Washington - (Popular Publication)
Collins H.P., Boydston,R.A., Fransen S., Hang A.N. 2007. Switchgrass Production in Washington – Part II of Biofuel Feedstocks in Washington. Pacific Northwest Sustainable Agriculture Newsletter. ARIS 213741
Perennial Warm-Season Grasses for Biofuels - (Proceedings)
Fransen, S., Collins, H.P., Boydston, R.A. 2006. Perennial Warm-Season Grasses for Biofuels. Proceedings of Forage and Grassland Conference. Reno, NV. PP 147-153.
Greenhouse Gas Reduction Through Agricultural Carbon Enhancement Network (Gracenet)-Progress Report - (Other)
Follett, R.F., Johnson, J.M., Parkin, T.B., Smith, J.L., Franzluebbers, A.J., Sainju, U.M., Zobeck, T.M., Collins, H.P., Mikha, M.M. 2006. Greenhouse gas reduction through agricultural carbon enhancement network (gracenet)-progress report. Agricultural Research Service Publication.
Biofuel Feedstocks in Washington - (Popular Publication)
Collins H.P., Boydston, R.A., Fransen, S., Hang A.N. 2006. Biofuel Feedstocks in Washington. In Sustaining the Pacific Northwest - Food, Farm, & Natural Resource Systems, Newsletter, CSNAR, Washington State University Extension. Vol 4,3:1-4.
Growth of switchgrass as biofuel in the Pacific Northwest - (Proceedings)
Steve Fransen, Harold P. Collins and Rick A. Boydston. 2006. Growth of switchgrass as biofuel in the Pacific Northwest. Pp 2-3. Proceedings of the 5th Eastern Native Grass Symposium, Harrisburg, PA October 10-13, 2006.
Reduced Tillage in a Three Year Potato Rotation - (Abstract Only)
American Society Agronomy Abstracts, 2006 International Meetings, Indianapolis, IN Nov 12-16, 2006, on CD, © Copyright 2006, ASA-CSSA-SSSA
Trace Gas Fluxes from an Irrigated Sandy Soil under Vegetable Cropping Systems in Eastern Washington - (Abstract Only)
American Society Agronomy Abstracts, 2006 International Meetings, Indianapolis, IN Nov 12-16, 2006, on CD, © Copyright 2006, ASA-CSSA-SSSA
Water Use Efficiency and Nutrition Management of Winter Canola - (Abstract Only)
American Society of Agronomy Abstracts, 2006 International Meetings, Indianapolis, IN Nov 12-16, 2006, on CD, © Copyright 2006, ASA-CSSA-SSSA.
Use of 15n Isotopic Techniques to Assess the Potential of a Mustard Cover Crop to Cycle N to Potatoes - (Peer Reviewed Journal)
Collins, H.P., Delgado, J.A., Alva, A.K., Follett, R.F. 2007. Use of 15n isotopic techniques to estimate nitrogen cycling from a mustard cover crop to potatoes. Agronomy Journal. 99: 27-35, 2007.
Soil Carbon Pools and Fluxes Following Land Conversion in a Semi-Arid Shrub-Steppe Ecosystem - (Peer Reviewed Journal)
Cochran, R.L., Collins, H.P., Kennedy, A.C., Bezdicek, D.F. 2006. Soil carbon pools and fluxes following land conversion in a semi-arid shrub-steppe ecosystem. Biology and Fertility of Soils. 43:479-489.
Performance of arugula (Eruca sativa) as a green manure and trap crop for fungal pathogens and parasitic nematode suppression in potato - (Abstract Only)
Riga, E., Pierce, F., Collins, H.P. 2006. Performance of arugula (Eruca sativa) as a green manure and trap crop for fungal pathogens and parasitic nematode suppression in potato. American Phytopathological Society Abstracts. 96:S97.
Managing Soil Microorganisms and Their Processes - (Book / Chapter)
Smith, J.L., Collins, H.P. Managing soil microorganisms and their processes. Book Chapter pp 471-502. 2007.
Control of Fusarium Root Rot with a Mustard Green Manure, 2003 - (Peer Reviewed Journal)
Grunwald, N.J., Collins, H.P., Mcguire, A. 2006. Control of fusarium root rot with a mustard green manure, 2003. Biol. Cult. Tests. 21: Vo 25
Effect of Foliar Applied Plant Elicitors on Microbial and Nematode Populations in the Root Zone of Potato - (Peer Reviewed Journal)
Collins, H.P., Navarre, D.A., Riga, E., Pierce, F.J. 2006. Effect of foliar applied plant elicitors on microbial and nematode populations in the root zone of potato. Communications in Soil Science and Plant Analysis. 37:1747-1759.
Nitrogen Mineralization from Different Crop Residues in the Pacific Northwest Irrigated Potato Cropping Systems - (Peer Reviewed Journal)
Alva, A.K., Collins, H.P., Boge, W.L., Boydston, R.A. 2005. Nitrogen mineralization from different crop residues in the pacific northwest irrigated potato cropping systems. Journal of Vegetable Science. Vol 11: 47-59. 2005.
Soil Microbial, Fungal and Nematode Responses to Soil Fumigation and Cover Crops under Potato Production - (Peer Reviewed Journal)
Collins, H.P., Alva, A.K., Boydston, R.A., Cochran, R.L., Hamm, P., Riga, E. 2006. Soil microbial, fungal and nematode responses to soil fumigation and cover crops under potato production. Biology and Fertility of Soils. 42:247-257.
Spatial and Seasonal Patterns of C and N Mineralization in An Irrigated Potato Rotation - (Abstract Only)
Collins, H.P., Riga, E., Pierce, F. 2005. Spatial and seasonal patterns of c and n mineralization in an irrigated potato rotation. Agronomy Abstracts. On CD.
Reduced Tillage in a Three Year Potato Rotation - (Proceedings)
Collins, H.P., Boydston, R.A., Alva, A.K., Pierce, F., Hamm, P. 2005. Reduced tillage in a three year potato rotation. Proceedings Washington State Potato Conference. Vol 44: 13-26, 2005.
The Effect of Green Manures on Meloidogyne Chitwoodi and Paratrichodorus Allius, Economically Important Nematodes of Potatoes in the Pacific Northwest of U.S.A. - (Peer Reviewed Journal)
Riga, E., Collins, H.P. 2005. The effect of green manures on meloidogyne chitwoodi and paratrichodorus allius, economically important nematodes of potatoes in the pacific northwest of u.s.a.. Agroindustria Rivista Quadrimestrale. 3:321-322.
Mustard for Pest Control, Not for Your Sandwich - (Popular Publication)
Boydston, R.A., Collins, H.P., Alva, A.K. 2004. Mustard for pest control, not for your sandwich. USDA Agricultural Research Service Publication. October:14-15.
Microbial Transformations and Recovery of Cover Crop N in An Irrigated Potato Cropping System - (Abstract Only)
Collins, H.P., Delgado, J., Alva, A.K. 2004. Microbial transformations and recovery of cover crop n in an irrigated potato cropping system. ASA-CSSA-SSSA Annual Meeting, Seattle, WA., Oct. 31-Nov. 4, 2004 (On CD).
Changes in Soil Microbial Diversity During the Conversion of a Native Shrub-Steppe to An Irrigated Agroecosystem II - (Abstract Only)
Cochran, R.L., Collins, H.P., Kennedy, A.C., Grunwald, N.J. 2004. Changes in soil microbial diversity during the conversion of a native shrub-steppe to an irrigated agroecosystem ii. American Society of Agronomy Abstracts.
Fall Planted Cover Crop Trial in Four Year Crop Rotation - (Proceedings)
BOYDSTON, R.A., COLLINS, H.P., ALVA, A.K., HAMM, P., RIGA, E. FALL PLANTED COVER CROP TRIAL IN FOUR YEAR CROP ROTATION. ECOLOGICAL AND ORGANIC FARM MANAGEMENT WORKSHOP PROCEEDINGS, WILSONVILLE, OR. WASH. ST. UNIV. CENTER FOR SUSTAINING AGRIC. AND NAT. RESOURCES. FEB 2004. p. 19.
The Effect of Management on the Dynamics and Storage Capacity of Soil Organic Matter in the Canadian Prairies - (Peer Reviewed Journal)
Paul, E.A., Collins, H.P., Paustian, K., Elliott, E.T., Frey, S., Cole, C.V., Juma, N., Janzen, H., Campbell, C.A. 2004. The effect of management on the dynamics and storage capacity of soil organic matter in the canadian prairies. Canadian Journal of Soil Science. 84:49-61.
Weed Suppression Using Cover Crops and Seed Meals - (Abstract Only)
Boydston, R.A., Al-Khatib, K., Vaughn, S.F., Collins, H.P., Alva, A.K. 2004. Weed suppression using cover crops and seed meals. Abstracts of the First International Biofumigation Conference, Florence, Italy, March 2004.
Management Strategies to Improve Sustainability of Irrigated Potato Rotation Cropping Systems - (Abstract Only)
ALVA, A.K., COLLINS, H.P., BOYDSTON, R.A., MARCOS, J., REDDY, V. MANAGEMENT STRATEGIES TO IMPROVE SUSTAINABILITY OF IRRIGATED POTATO ROTATION CROPPING SYSTEMS. INTERNATIONAL SOIL AND WATER CONSERVATION CONFERENCE (In Press) 2004.
Evaluation of Simpotato and Substor for Potato Growth and Development Simulation in the Columbia Basin - (Proceedings)
Fraisse, C., Marcos, J., Alva, A.K., Collins, H.P. 2003. Evaluation of simpotato and substor for potato growth and development simulation in the Columbia Basin. ASAE Annual International Meeting. Transactions of the American Society of Agricultural Engineers. (On CD).
Effect of Plant Activators on Soil-Rhizosphere Microbial Communities - (Abstract Only)
COLLINS, H.P., GRUNWALD, N.J., NAVARRE, D.A., PIERCE, F.J. EFFECT OF PLANT ACTIVATORS ON SOIL-RHIZOSPHERE MICROBIAL COMMUNITIES. AMERICAN SOCIETY OF AGRONOMY ABSTRACTS - CD, SO3-Collins 760503. 2003.
Soil Microbial Responses to Conversion of Native Shrub-Steppe Ecosystem to Irrigated Agroecosystem - (Abstract Only)
COCHRAN, R.L., COLLINS, H.P., GRUNWALD, N.J., KENNEDY, A.C. SOIL MICROBIAL RESPONSES TO CONVERSION OF NATIVE SHRUB-STEPPE ECOSYSTEM TO IRRIGATED AGROECOSYSTEM. AMERICAN SOCIETY OF AGRONOMY ABSTRACTS - CD-SO3, Cochran 697377. 2003.
The Effect of Combining Synthetic Nematicides and Organic Nematicides on Plant Parasitic Nematodes of Potatoes - (Abstract Only)
RIGA, E.H., COLLINS, H.P. THE EFFECT OF COMBINING SYNTHETIC NEMATICIDES AND ORGANIC NEMATICIDES ON PLANT PARASITIC NEMATODES OF POTATOES. POTATO ASSOCIATION OF AMERICA PROCEEDINGS. 2003. G18, p.35.
Edaphic and Biological Factors Impacting Metham Sodium Efficacy to Control Root-Knot Nematodes in the Pacific Northwest - (Abstract Only)
RIGA, E., MOJTAHEDI, H., COLLINS, H.P., WILSON, J. EDAPHIC AND BIOLOGICAL FACTORS IMPACTING METHAM SODIUM EFFICACY TO CONTROL ROOT-KNOT NEMATODES IN THE PACIFIC NORTHWEST. POTATO ASSOCIATION OF AMERICA PROCEEDINGS. 2003. G17, p. 35.
Nitrogen Mineralization in a Potato Cropping System - (Abstract Only)
ALVA, A.K., COLLINS, H.P., BOYDSTON, R.A. NITROGEN MINERALIZATION IN A POTATO CROPPING SYSTEM. American Society of Agronomy, Crop Science Society of America, Soil Science Society of America Annual Meeting Abstracts(on CD) 2003.
Adopting Conservation Tillage in Irrigated Cropping Systems - (Proceedings)
COLLINS, H.P., PIERCE, F., BOYDSTON, R.A., GRUNWALD, N.J., MUNYANEZA, J.E. ADOPTING CONSERVATION TILLAGE IN IRRIGATED CROPPING SYSTEMS. 42ND ANNUAL WASHINGTON STATE POTATO CONFERENCE PROCEEDINGS, FEB. 2-6,2003, MOSES LAKE, WA, WASHINGTON STATE POTATO COMMISSION, P. 81-92. 2003.
Soil Microbial Community Characteristics Along An Elevation Gradient in the Laguna Mountains of Southern California - (Peer Reviewed Journal)
COLLINS, H.P., CAVIGELLI, M.A. SOIL MICROBIAL COMMUNITY CHARACTERISTICS ALONG AN ELEVATION GRADIENT IN THE LAGUNA MOUNTAINS OF SOUTHERN CALIFORNIA. SOIL BIOLOGY AND BIOCHEMISTRY. 2003. V. 35. P. 1027-1037.
Potato Disease Resistance - (Popular Publication)
Navarre, D.A., Mayo, D., Collins, H.P. 2002. Potato disease resistance. Potato Progress. Vol. 13:1-2.
Pattern of Plant Growth, Dry Matter and Nitrogen Distribution in Russet Burbank Plants - (Popular Publication)
ALVA, A.K., HODGES, T., BOYDSTON, R.A., COLLINS, H.P. PATTERN OF PLANT GROWTH, DRY MATTER AND NITROGEN DISTRIBUTION IN RUSSET BURBANK PLANTS. POTATO PROGRESS, 1(9):1-2. 2002.
Response of the Soil Microbial Community to Soil Fumigation and Mustard Cover Crops - (Popular Publication)
COLLINS, H.P., ALVA, A.K., BOYDSTON, R.A., MCGUIRE, A., HAMM, P., RIGA, E. RESPONSE OF THE SOIL MICROBIAL COMMUNITY TO SOIL FUMIGATION AND MUSTARD COVER CROPS. POTATO PROGRESS, Vol. 2(8):1-4. 2002.
Evaluation of Enviroscan Capacitance Probes for Monitoring Soil Moisture in Center Pivot Irrigated Potatoes - (Peer Reviewed Journal)
ALVA, A.K., COLLINS, H.P., FRAISSE, C., BOYDSTON, R.A. EVALUATION OF ENVIROSCAN CAPACITANCE PROBES FOR MONITORING SOIL MOISTURE IN CENTER PIVOT IRRIGATED POTATOES. JOURNAL OF APPLIED IRRIGATION SCIENCE, 38:93-110. 2003.
Nutrient Dynamics of Dairy Manure Applied to Agricultural Lands in Eastern Washington - (Abstract Only)
COLLINS, H.P., ALVA, A.K., FRANSEN, S. NUTRIENT DYNAMICS OF DAIRY MANURE APPLIED TO AGRICULTURAL LANDS IN EASTERN WASHINGTON. AGRONOMY ABSTRACTS (ON CD) 2002.
Potato Nitrogen Management in Irrigated Pacific Northwest - (Abstract Only)
ALVA, A.K., COLLINS, H.P., BOYDSTON, R.A. POTATO NITROGEN MANAGEMENT IN IRRIGATED PACIFIC NORTHWEST. AGRONOMY ABSTRACTS (ON CD) 2002.
A Comparison of Bromide and Nitrate Transport in Soils - (Abstract Only)
ALVA, A.K., PARAMASIVAM, S., COLLINS, H.P., SAJWAN, K.S., BOYDSTON, R.A. A COMPARISON OF BROMIDE AND NITRATE TRANSPORT IN SOILS. AGRONOMY ABSTRACTS (ON CD) 2002.
Nitrogen Transformation from Potato and Rotational Crop Residues - (Proceedings)
ALVA, A.K., COLLINS, H.P., BOYDSTON, R.A. NITROGEN TRANSFORMATION FROM POTATO AND ROTATIONAL CROP RESIDUES. PROCEEDINGS 41ST WASHINGTON STATE POTATO CONFERENCE, P. 75-86. 2002.
Evaluation and Mitigation of Pollutant Transport in Agricultural Sandy Soils - (Proceedings)
ALVA, A.K., COLLINS, H.P., PARAMASIVAM, S., SAJWAN, K., FARES, A. EVALUATION AND MITIGATION OF POLLUTANT TRANSPORT IN AGRICULTURAL SANDY SOILS. TRANSACTIONS OF THE SEVENTEENTH WORLD CONGRESS OF SOIL SCIENCE, (ON CD) PAPER #458, 0458.PDF. 2002.
Evaluation and Mitigation of Pollutant Transport in Agricultural Sandy Soils - (Proceedings)
ALVA, A.K., COLLINS, H.P., PARAMASIVAM, S., SAJWAN, K., FARES, A. EVALUATION AND MITIGATION OF POLLUTANT TRANSPORT IN AGRICULTURAL SANDY SOILS. TRANSACTIONS OF THE SEVENTEENTH WORLD CONGRESS OF SOIL SCIENCE, (ON CD) PAPER #458, 0458.PDF. 2002.
Evaluation and Mitigation of Pollutant Transport in Agricultural Sandy Soils - (Proceedings)
ALVA, A.K., COLLINS, H.P., PARAMASIVAM, S., SAJWAN, K.S. EVALUATION AND MITIGATION OF POLLUTANT TRANSPORT IN AGRICULTURAL SANDY SOILS. 17TH WORLD CONGRESS OF SOIL SCIENCE, Bangkok, Thailand, August 14-21, 2002, Vol. 1:116. 2002.
Evaluation and Mitigation of Pollutant Transport in Agricultural Sandy Soils - (Proceedings)
ALVA, A.K., COLLINS, H.P., PARAMASIVAM, S., SAJWAN, K., FARES, A. EVALUATION AND MITIGATION OF POLLUTANT TRANSPORT IN AGRICULTURAL SANDY SOILS. TRANSACTIONS OF THE SEVENTEENTH WORLD CONGRESS OF SOIL SCIENCE, (ON CD) PAPER #458, 0458.PDF. 2002.
Evaluation and Mitigation of Pollutant Transport in Agricultural Sandy Soils - (Proceedings)
ALVA, A.K., COLLINS, H.P., PARAMASIVAM, S., SAJWAN, K., FARES, A. EVALUATION AND MITIGATION OF POLLUTANT TRANSPORT IN AGRICULTURAL SANDY SOILS. TRANSACTIONS OF THE SEVENTEENTH WORLD CONGRESS OF SOIL SCIENCE, (ON CD) PAPER #458, 0458.PDF. 2002.
Decomposition of Potato, Corn, and Wheat Crop Residues - (Popular Publication)
ALVA, A.K., COLLINS, H.P., BOYDSTON, R.A. DECOMPOSITION OF POTATO, CORN, AND WHEAT CROP RESIDUES. POTATO PROGRESS, Vol. 1:1-2. 2001.
Corn, Wheat and Potato Crop Residue Decomposition and Nitrogen Mineralization in Sandy Soils under An Irrigated Potato Rotation - (Peer Reviewed Journal)
ALVA, A.K., COLLINS, H.P., BOYDSTON, R.A. CORN, WHEAT AND POTATO CROP RESIDUE DECOMPOSITION AND NITROGEN MINERALIZATION IN SANDY SOILS UNDER AN IRRIGATED POTATO ROTATION. COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS, 33:2643-2651. 2002.
Effects of Irrigation and Tillage Practices on Yield of Potato under High Production Conditions in the Pacific Northwest - (Peer Reviewed Journal)
ALVA, A.K., HODGES, T., BOYDSTON, R.A., COLLINS, H.P. EFFECTS OF IRRIGATION AND TILLAGE PRACTICES ON YIELD OF POTATO UNDER HIGH PRODUCTION CONDITIONS IN THE PACIFIC NORTHWEST. COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS, 33:1451-1460. 2002.
Soil Microbial Responses to Soil Fumigation and Cover Crops in Potato Production Systems - (Abstract Only)
COLLINS, H.P., COCHRAN, R.L., ALVA, A.K., BOYDSTON, R.A. SOIL MICROBIAL RESPONSES TO SOIL FUMIGATION AND COVER CROPS IN POTATO PRODUCTION SYSTEMS. AGRONOMY ABSTRACTS (ON CD) 2001.
Potato Nutrient Management Issues in the Pacific Northwest - (Abstract Only)
ALVA, A.K., COLLINS, H.P., BOYDSTON, R.A. POTATO NUTRIENT MANAGEMENT ISSUES IN THE PACIFIC NORTHWEST. AGRONOMY ABSTRACTS (ON CD) 2001.
Dynamics of Resistant Soil Carbon of Midwestern Agricultural Soils Measuredby Naturally Occurring 14c Abundance - (Peer Reviewed Journal) - (25-Apr-01)
Dry Matter and Nitrogen Accumulations and Partitioning in Two Potato Cultivars - (Peer Reviewed Journal)
ALVA, A.K., HODGES, T., COLLINS, H.P., BOYDSTON, R.A. DRY MATTER AND NITROGEN ACCUMULATIONS AND PARTITIONING IN TWO POTATO CULTIVARS. JOURNAL OF PLANT NUTRITION, 25:1621-1630. 2002.
Nitrogen Transformation from Crop Residues in a Pacific Northwest Irrigatedsandy Soil - (Abstract Only)
ALVA, A.K., COLLINS, H.P., BOYDSTON, R.A., DAVENPORT, J., STEVENS, R.G. NITROGEN TRANSFORMATION FROM CROP RESIDUES IN A PACIFIC NORTHWEST IRRIGATEDSANDY SOIL. INTERNATIONAL SYMPOSIUM ON SOIL AND PLANT ANALYSIS, p. 6. 2001.
Last Modified: 4/5/2012